Buggy code:
public class SugarRecord { protected Long id = null ; public static < T > void deleteAll ( Class < T > type ) { } public static < T > void deleteAll ( Class < T > type , String whereClause , String ... whereArgs ) { } @ SuppressWarnings ( "deprecation" ) public static < T > void saveInTx ( T ... objects ) { } @ SuppressWarnings ( "deprecation" ) public static < T > void saveInTx ( Collection < T > objects ) { } public static < T > List < T > listAll ( Class < T > type ) { } public static < T > T findById ( Class < T > type , Long id ) { } public static < T > T findById ( Class < T > type , Integer id ) { } public static < T > Iterator < T > findAll ( Class < T > type ) { } public static < T > Iterator < T > findAsIterator ( Class < T > type , String whereClause , String ... whereArgs ) { } public static < T > Iterator < T > findWithQueryAsIterator ( Class < T > type , String query , String ... arguments ) { } public static < T > Iterator < T > findAsIterator ( Class < T > type , String whereClause , String [ ] whereArgs , String groupBy , String orderBy , String limit ) { } public static < T > List < T > find ( Class < T > type , String whereClause , String ... whereArgs ) { } public static < T > List < T > findWithQuery ( Class < T > type , String query , String ... arguments ) { } public static void executeQuery ( String query , String ... arguments ) { } public static < T > List < T > find ( Class < T > type , String whereClause , String [ ] whereArgs , String groupBy , String orderBy , String limit ) { } public static < T > long count ( Class < ? > type ) { } public static < T > long count ( Class < ? > type , String whereClause , String [ ] whereArgs ) { } public static < T > long count ( Class < ? > type , String whereClause , String [ ] whereArgs , String groupBy , String orderBy , String limit ) { } public static long save ( Object object ) { } static long save ( SQLiteDatabase db , Object object ) { List < Field > columns = ReflectionUtil . getTableFields ( object . getClass ( ) ) ; ContentValues values = new ContentValues ( columns . size ( ) ) ; for ( Field column : columns ) { ReflectionUtil . addFieldValueToColumn ( values , column , object ) ; } long id = db . insertWithOnConflict ( NamingHelper . toSQLName ( object . getClass ( ) ) , null , values , CONFLICT_REPLACE ) ; if ( SugarRecord . class . isAssignableFrom ( object . getClass ( ) ) ) { <START_BUG> ReflectionUtil . setFieldValueForId ( object , id ) ; <END_BUG> } Log . i ( "Sugar" , ( ( ( object . getClass ( ) . getSimpleName ( ) ) + "<seq2seq4repair_space>saved<seq2seq4repair_space>:<seq2seq4repair_space>" ) + id ) ) ; return id ; } private static void inflate ( Cursor cursor , Object object ) { } public void delete ( ) { } public long save ( ) { } @ SuppressWarnings ( "unchecked" ) void inflate ( Cursor cursor ) { } public Long getId ( ) { } public void setId ( Long id ) { } static class CursorIterator < E > implements Iterator < E > { Class < E > type ; Cursor cursor ; public CursorIterator ( Class < E > type , Cursor cursor ) { } @ Override public boolean hasNext ( ) { } @ Override public E next ( ) { } @ Override public void remove ( ) { } } }

Fix:
( ( SugarRecord ) ( object ) ) . setId ( id ) ;